Strategies for dynamic failure analysis on aerospace structures

Dynamic phenomena can jeopardize the structural integrity of aerospace structures and engineers have developed different strategies to analyze them. For instance, a low-velocity impact creates delaminations in composite materials and the prediction of the response during the event is necessary to evaluate the residual strength of the structure. An airport device must be frangible when subjected to a collision; the object has to break, to deform, or to yield under the impact. There are special structures that have to withstand exceptional loads, a turboprop aircraft under a blade loss has to be capable of successfully completing the flight. This chapter simulates in detail these events as examples of highly dynamical phenomena. All these structures have been subjected to an analysis using distinct strategies, such as implicit and explicit finite element methods including nonlinear behaviors, damages, and several types of failures trying to identify the key parameters in the failure sequence.

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